make submit_unsigned into DispatchClass::Operational (#9309)

Closes #8511.

substrate/frame/election-provider-multi-phase/src/lib.rs

@@ -829,11 +829,14 @@ pub mod pallet {
 		/// putting their authoring reward at risk.
 		///
 		/// No deposit or reward is associated with this submission.
-		#[pallet::weight(T::WeightInfo::submit_unsigned(
-			witness.voters,
-			witness.targets,
-			solution.compact.voter_count() as u32,
-			solution.compact.unique_targets().len() as u32
+		#[pallet::weight((
+			T::WeightInfo::submit_unsigned(
+				witness.voters,
+				witness.targets,
+				solution.compact.voter_count() as u32,
+				solution.compact.unique_targets().len() as u32
+			),
+			DispatchClass::Operational,
 		))]
 		pub fn submit_unsigned(
 			origin: OriginFor<T>,
@@ -904,7 +907,7 @@ pub mod pallet {
 
 			// Note: we don't `rotate_round` at this point; the next call to
 			// `ElectionProvider::elect` will succeed and take care of that.
-			
+
 			let solution = ReadySolution {
 				supports,
 				score: [0, 0, 0],